Electron Waiting Times of a Cooper Pair Splitter

2017/09/30 by Nicklas Walldorf, Ciprian Padurariu, Antti-Pekka Jauho +2 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Condensed matter physics #Cooper pair #Electron #Electron pair #Optics #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Splitter #Superconductivity #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.120.087701

published as Phys. Rev. Lett. 120, 087701 (2018) · 6 pages, 4 figures, final version as published in Phys. Rev. Lett

openalex publication_date 2018/02/22 · arxiv created 2018/03/12 · arxiv updated 2018/03/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Electron waiting times are an important concept in the analysis of quantum transport in nanoscale conductors. Here we show that the statistics of electron waiting times can be used to characterize Cooper pair splitters that create spatially separated spin-entangled electrons. A short waiting time between electrons tunneling into different leads is associated with the fast emission of a split Cooper pair, while long waiting times are governed by the slow injection of Cooper pairs from a superconductor. Experimentally, the waiting time distributions can be measured using real-time single-electron detectors in the regime of slow tunneling, where conventional current measurements are demanding. Our work is important for understanding the fundamental transport processes in Cooper pair splitters and the predictions may be verified using current technology.

Citations

• Absence of split pairs in cross correlations of a highly transparent normal metal–superconductor–normal metal electron-beam splitter
• Distributions of electron waiting times in quantum-coherent conductors
• Waiting time distributions of electron transfers through quantum dot Aharonov-Bohm interferometers
• Electronic entanglement in the vicinity of a superconductor
• Experimental Observation of Bias-Dependent Nonlocal Andreev Reflection
• Electron waiting times in non-Markovian quantum transport
• Test of Bell's Inequality using the Spin Filter Effect in Ferromagnetic Semiconductor Microstructures
• Local electrical tuning of the nonlocal signals in a Cooper pair splitter
• Evidence for Crossed Andreev Reflection in Superconductor-Ferromagnet Hybrid Structures
• Interference effects in the counting statistics of electron transfers through a double quantum dot
• Quantum Computing

Cited by

• Counting quantum jumps: A summary and comparison of fixed-time and fluctuating-time statistics in electron transport